diff --git a/CHANGELOG.md b/CHANGELOG.md
index b60130f..8df5195 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
-## [2.1.8] - 2023-04-07
+## [2.1.9] - 2023-04-07
 ### Fixed
 - Fix No option constructor throws NullPointerException, add null options validate
   - PR: https://github.com/AfterShip/aftership-sdk-java/pull/48
@@ -74,7 +74,7 @@ Compatibility
 - Solving issue at Checkpoint.java, typo in ```country_iso3```
 
 
-[2.1.8]: https://github.com/AfterShip/aftership-sdk-java/compare/2.1.7...2.1.8
+[2.1.9]: https://github.com/AfterShip/aftership-sdk-java/compare/2.1.7...2.1.9
 [2.1.7]: https://github.com/AfterShip/aftership-sdk-java/compare/2.1.6...2.1.7
 [2.1.6]: https://github.com/AfterShip/aftership-sdk-java/compare/2.1.5...2.1.6
 [2.1.5]: https://github.com/AfterShip/aftership-sdk-java/compare/v2.1.3...2.1.5
diff --git a/README.md b/README.md
index b4fb79d..108fbf8 100644
--- a/README.md
+++ b/README.md
@@ -18,14 +18,14 @@ Requirements:
 <dependency>
   <groupId>com.aftership</groupId>
   <artifactId>aftership-sdk</artifactId>
-  <version>2.1.8</version>
+  <version>2.1.9</version>
 </dependency>
 ```
 
 ### Gradle
 
 ```text
-implementation "com.aftership:aftership-sdk:2.1.8"
+implementation "com.aftership:aftership-sdk:2.1.9"
 ```
 
 
diff --git a/aftership-sdk/src/main/java/com/aftership/sdk/utils/Define.java b/aftership-sdk/src/main/java/com/aftership/sdk/utils/Define.java
index 8e06cc9..c66d21a 100644
--- a/aftership-sdk/src/main/java/com/aftership/sdk/utils/Define.java
+++ b/aftership-sdk/src/main/java/com/aftership/sdk/utils/Define.java
@@ -4,7 +4,7 @@
 public final class Define {
 
   /** Version of the current component */
-  public static final String VERSION = "2.1.8";
+  public static final String VERSION = "2.1.9";
 
   /** The range of http status codes for successful API requests */
   public static final int[] SUCCESSFUL_CODE_RANGE;
diff --git a/build.gradle b/build.gradle
index 9ca80b4..01cc1c4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ buildscript {
 
 allprojects {
     group 'com.aftership'
-    version '2.1.8'
+    version '2.1.9'
 
     repositories {
         mavenCentral()
@@ -110,7 +110,7 @@ project(':aftership-sample') {
     dependencies {
 //        compile project(':aftership-sdk')
         implementation "com.squareup.okhttp3:okhttp:${okhttpVersion}"
-        implementation "com.aftership:aftership-sdk:2.1.8"
+        implementation "com.aftership:aftership-sdk:2.1.9"
     }
 
     jar {